Pinpoint Test O: The Luggage Compartment Lid Module Does Not Respond To The Diagnostic Tool

WARNING: This page is about a different car, the 2004 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Test Step

O1 CHECK THE LUGGAGE COMPARTMENT LID MODULE C4081a FOR DAMAGE

Key in OFF position.
Disconnect: Luggage Compartment Lid Module C4081a.
Inspect the luggage compartment lid module C4081a for damage.
Is the luggage compartment lid module C4081a OK?

Result / Action to Take

Yes

GO to O2.

REPAIR the luggage compartment lid module C4081a. CARRY OUT the diagnostic tool data link test.

Test Step

O2 CHECK CIRCUIT 70 (LB/WH) BETWEEN THE C251 AND THE LUGGAGE COMPARTMENT LID MODULE C4081a FOR AN OPEN

Measure the resistance between the luggage compartment lid module C4081a pin 7, circuit 70 (LB/WH), harness side and the C251 pin 7, circuit 70 (LB/WH), harness side.

Fig 1: Checking Circuit 70 (LB/WH) Between C251 And Luggage Compartment Lid Module C4081a For An Open
Courtesy of FORD MOTOR CO.
Is the resistance less than 5 ohms?

Result / Action to Take

Yes

GO to O3.

REPAIR the circuit in question. CARRY OUT the diagnostic tool data link test.

Test Step

O3 CHECK FOR CORRECT LUGGAGE COMPARTMENT LID MODULE OPERATION

Disconnect all the luggage compartment lid module connectors.
Check for:
- corrosion
- pushed-out pins
Connect all the luggage compartment lid module connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?

Result / Action to Take

Yes

INSTALL a luggage compartment lid module. REFER to BODY CLOSURES . CARRY OUT the diagnostic tool data link test.

The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the selftest.